Remove Tach and Replace with a new Clock

I'm about to remove a factory tach from the cluster and replace with the 24 hour Rallye Clock which my car came with from the factory. I'm aware that the factory clock connector is already back there.

I've R&R'd a tach before but it's been awhile so help me remember if I can do this by just removing the dash cover and maybe the radio? Or, do I need to drop the steering column and remove the cluster screws in order to lower the cluster to get to the tach/clock location?

Here's the new clock and the in-dash tach which will come out.

 

It can be done through the radio hole with some patience,but till you remove the radio,the support bracket etc,you can remove the dash pad,drop the steering column and do it that was a little simpler.Don't forget that pesky little wire that makes the needle move to each gear though.

 

Yes, I remember that little gear indicator linkage. I bent it the first time I removed a cluster. Never again. LOL

 

Yes, it's an AC car and I had to remove the center duct on my last GS to install a tach. I think I may just lower the steering column and detach the cluster.

 

I'm remembering that since my car is an AC car, the center duct was a PITA to remove to get to the tach that way so, I've concluded that going in from the top is the way to go. Did you have to remove the dash pad and lower the steering column for your tach install?

 

You have to remove the pad to get the center AC duct out.